package cn.zw.data.utils;

import java.util.Objects;

/**
 * 判断为空工具类
 * @author 周伟
 */
public class ZwNullUtils {
    public static boolean isNull(String str){
        return str == null || Objects.equals("", str) || Objects.equals("null", str) || Objects.equals("undefined", str);
    }
}
